diff --git a/src/gateway/server-methods/sessions.ts b/src/gateway/server-methods/sessions.ts
index eb66189899d..47f9042ac74 100644
--- a/src/gateway/server-methods/sessions.ts
+++ b/src/gateway/server-methods/sessions.ts
@@ -278,6 +278,30 @@ export const sessionsHandlers: GatewayRequestHandlers = {
 
     const cfg = loadConfig();
     const target = resolveGatewaySessionStoreTarget({ cfg, key });
+    const { entry } = loadSessionEntry(key);
+    const sessionId = entry?.sessionId;
+    const queueKeys = new Set<string>(target.storeKeys);
+    queueKeys.add(target.canonicalKey);
+    if (sessionId) {
+      queueKeys.add(sessionId);
+    }
+    clearSessionQueues([...queueKeys]);
+    stopSubagentsForRequester({ cfg, requesterSessionKey: target.canonicalKey });
+    if (sessionId) {
+      abortEmbeddedPiRun(sessionId);
+      const ended = await waitForEmbeddedPiRunEnd(sessionId, 15_000);
+      if (!ended) {
+        respond(
+          false,
+          undefined,
+          errorShape(
+            ErrorCodes.UNAVAILABLE,
+            `Session ${key} is still active; try again in a moment.`,
+          ),
+        );
+        return;
+      }
+    }
     const storePath = target.storePath;
     let oldSessionId: string | undefined;
     let oldSessionFile: string | undefined;
diff --git a/src/gateway/server.sessions.gateway-server-sessions-a.e2e.test.ts b/src/gateway/server.sessions.gateway-server-sessions-a.e2e.test.ts
index 1eb83fcf7b4..e7718cb8eac 100644
--- a/src/gateway/server.sessions.gateway-server-sessions-a.e2e.test.ts
+++ b/src/gateway/server.sessions.gateway-server-sessions-a.e2e.test.ts
@@ -597,4 +597,49 @@ describe("gateway server sessions", () => {
 
     ws.close();
   });
+
+  test("sessions.reset aborts active runs and clears queues", async () => {
+    const dir = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-sessions-"));
+    const storePath = path.join(dir, "sessions.json");
+    testState.sessionStorePath = storePath;
+
+    await fs.writeFile(
+      path.join(dir, "sess-main.jsonl"),
+      `${JSON.stringify({ role: "user", content: "hello" })}\n`,
+      "utf-8",
+    );
+
+    await writeSessionStore({
+      entries: {
+        main: { sessionId: "sess-main", updatedAt: Date.now() },
+      },
+    });
+
+    embeddedRunMock.activeIds.add("sess-main");
+    embeddedRunMock.waitResults.set("sess-main", true);
+
+    const { ws } = await openClient();
+
+    const reset = await rpcReq<{ ok: true; key: string; entry: { sessionId: string } }>(
+      ws,
+      "sessions.reset",
+      {
+        key: "main",
+      },
+    );
+    expect(reset.ok).toBe(true);
+    expect(reset.payload?.key).toBe("agent:main:main");
+    expect(reset.payload?.entry.sessionId).not.toBe("sess-main");
+    expect(sessionCleanupMocks.stopSubagentsForRequester).toHaveBeenCalledWith({
+      cfg: expect.any(Object),
+      requesterSessionKey: "agent:main:main",
+    });
+    expect(sessionCleanupMocks.clearSessionQueues).toHaveBeenCalledTimes(1);
+    const clearedKeys = sessionCleanupMocks.clearSessionQueues.mock.calls[0]?.[0] as string[];
+    expect(clearedKeys).toEqual(expect.arrayContaining(["main", "agent:main:main", "sess-main"]));
+    expect(embeddedRunMock.abortCalls).toEqual(["sess-main"]);
+    expect(embeddedRunMock.waitCalls).toEqual(["sess-main"]);
+
+    ws.close();
+  });
 });